Method of operating electrical machines in spaces containing an explosive atmosphere and construction of such machines

摘要

365,440. Stuffing-box substitutes. MASCHINENFABRIK OERLIKON, Oerlikon, near Zurich, Switzerland. April 24, 1931, No. 12154. Convention date, May 21, 1930. [Class 122 (v).] Means for sealing the gap traversed by the shaft 4 of an electrical machine in the event of an explosion within the casing 1, consists of a packing-ring 6a carried by a diaphragm 6 secured to the shaft. The pressure resulting from an explosion forces the diaphragm towards the end wall of the casing.